Primary studyCore evidenceSynthesis Structure

Colloidal crystal engineering with metal–organic framework nanoparticles and DNA

Wang S., Park S.S., Buru C.T. et al. · Nature Communications · 2020 · 2495

5materials
15samples
9synthesis routes
17measurements
47results
6claims and caveats

Evidence map

Open a family to keep every result attached to its sample, method and conditions.

Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

Application RelevanceSupport assessment: Medium

Ag+-stabilized PCN-222 2D superlattices photocatalyse selective CEES oxidation more efficiently than bulk PCN-222 under the reported conditions.

Caveat: Conversion values at 360 min are visually estimated from Fig. 5b; the text states higher efficiency qualitatively but does not tabulate conversions.

6 · Photocatalytic activity · Fig. 5 · Linked to 3 structured results

CaveatSupport assessment: High

The paper does not report electrical conductivity, charge mobility, Seebeck coefficient, power factor, electrochemical conductivity or device transport measurements for the MOFs.

Caveat: Extraction covered main text and SI; application data are photocatalytic.

1 · Abstract

Phase AssignmentSupport assessment: High

DNA-functionalised UiO-66 MOF PAEs form fcc, bcc and MOF-Au CsCl-type colloidal superlattices verified by SAXS and microscopy.

Caveat: The 20 nm Au CsCl assembly contains a small AlB2 impurity phase.

3-4 · Colloidal crystal engineering with MOF PAEs · Fig. 3 · Linked to 4 structured results

Structure Property LinkSupport assessment: High

The internal pores of UiO-66 and PCN-222 remain accessible after DNA modification, although BET surface area decreases.

Caveat: PCN-222 shows a larger decrease attributed to possible DNA adsorption in mesopores.

3 · Results · Supplementary Figs. 11 and 12 · Linked to 4 structured results

Structure Property LinkSupport assessment: High

MOF nanoparticle shape influences the resulting superlattice symmetry: octahedral UiO-66 gives bcc lattices, while PCN-222 nanorods form 2D hexagonal or tetragonal lattices depending on DNA linker design.

Caveat: The evidence is structural; transport consequences are not measured.

5 · Building block shape as a structure-influencing factor · Fig. 4 · Linked to 3 structured results

Synthesis MechanismSupport assessment: High

Phosphate/phosphonate-PEG-N3 passivation followed by DBCO-DNA click functionalisation provides colloidally stable MOF PAEs suitable for programmed DNA crystallisation.

Caveat: Demonstrated for Zr-based UiO-66 and PCN-222 nanoparticles; not a conductivity claim.

2-3 · Results · Figs. 1-2 · Linked to 3 structured results

Material identities

Names and aliases are kept exactly within the paper’s own identity model.

MaterialCompositionStructure contextSource
Ag-stabilized PCN-222 2D nanorod superlatticeBrowse family: PCN-222 / MOF-545PCN-222 nanorods + DNA linkers + Ag+ stabilizationPCN-222 Zr6 clusters; Ag+ stabilises DNA bonds · TCPP porphyrin linkers and DNA linker strands2D · CompositeAg+-stabilized PCN-222 nanorod superlattice retaining PCN-222 crystallinity after thermal/chemical treatments and catalysis.6 · Photocatalytic activity of the 2D PCN-222 nanorod superlattices · Fig. 5
Ag+ ion and single-strand DNA controlAg+ + single-strand DNAsingle-strand DNAunknown · UnknownNon-MOF photocatalysis control used in CEES oxidation.6 · Fig. 5 caption · Fig. 5b
PCN-222 / MOF-545 zirconium porphyrinic MOF nanorodsBrowse family: PCN-222 / MOF-545Zr6O8(H2O)8(TCPP-H2)2Zr6 secondary building units · TCPP-H2 = tetrakis(4-carboxyphenyl)porphyrin linker3D · PristineRod-shaped porphyrinic zirconium MOF, also referred to as PCN-222/MOF-545, assembled into 2D hexagonal or tetragonal superlattices.4 · Building block shape as a structure-influencing factor · Fig. 4d
UiO-66 zirconium MOF nanoparticlesZr6O4(OH)4(BDC)6; SI synthesis headings give [Zr6O4(OH)4(BDC)12]Zr6O4(OH)4 clusters / Zr6 secondary building units · BDC = 1,4-benzenedicarboxylate / terephthalic acid3D · PristineUiO-66 nanoparticles used as spherical and octahedral programmable atom equivalents; PXRD matches simulated UiO-66 before and after DNA functionalisation.2 · Results - Synthesis of uniform and colloidally stable MOF PAEs
UiO-66-Au DNA-linked CsCl hybrid superlatticeUiO-66 nanoparticles + Au nanoparticles + DNA linkersUiO-66 Zr6 clusters plus Au nanoparticle cores · UiO-66 BDC linkers; DBCO/thiol oligonucleotide surface linkers3D · CompositeCsCl-type (Pm-3m) binary colloidal superlattice of UiO-66 PAEs and Au PAEs.4 · Colloidal crystal engineering with MOF PAEs · Fig. 3d-f

Sample register

Sample form, processing state and composition status define the context for measurements.

Show 15 sample records
SampleForm and roleProcessing and geometrySource
Ag+ and single-strand DNA controlresearch_0704__mat__mat_non_mof_controlUnknown · Pristine Control · UnknownControl group for CEES photooxidation.6 · Fig. 5 caption · Fig. 5b
Ag+-stabilized PCN-222 2D superlattice photocatalystresearch_0704__mat__mat_ag_pcn222_latticePowder · Target Sample · CompositeAssembled PCN-222 superlattice solvent-exchanged into NaClO4/SDS, treated with AgNO3 in the dark, then exchanged with water and methanol.11 · Preparation of PCN-222 superlattice stabilized with Ag+ · Supplementary Figs. 21-24
bulk PCN-222 single crystal controlresearch_0704__mat__mat_pcn222Single Crystal · Pristine Control · Pristine FrameworkMicron-sized PCN-222 single crystal used as photocatalysis comparison at the same porphyrin loading.micron-sized6 · Photocatalytic activity · Fig. 5b
PCN-222 2D hexagonal nanorod superlatticeresearch_0704__mat__mat_pcn222Powder · Target Sample · CompositePCN-222 PAEs assembled with self-complementary DNA linkers.5 · Building block shape as a structure-influencing factor · Fig. 4e-h
PCN-222/MOF-545 nanorod nanoparticlesresearch_0704__mat__mat_pcn222Powder · Pristine Control · Pristine FrameworkDark purple rod-shaped PCN-222/MOF-545 nanoparticles after centrifugation and DMF solvent exchange.4 · Synthesis of PCN-222/MOF-545 NPs · Supplementary Fig. 8
DNA-PEG5k-functionalised PCN-222 PAEsresearch_0704__mat__mat_pcn222Powder · Target Sample · Guest LoadedPCN-222 nanorods passivated with phosphate-PEG5k-N3 and functionalised with DBCO-TEG DNA.6 · DNA functionalization of MOF NPs
PCN-222 2D tetragonal nanorod superlatticeresearch_0704__mat__mat_pcn222Powder · Target Sample · CompositeTwo batches of PCN-222 nanorods with complementary DNA linkers combined and annealed.5 · Building block shape as a structure-influencing factor · Fig. 4e-i
37 nm UiO-66 / 20 nm Au CsCl superlatticeresearch_0704__mat__mat_uio66_au_hybridPowder · Composite Sample · CompositeComplementary DNA-functionalised 37 nm UiO-66 PAEs and 20 nm Au PAEs assembled in a 1:1 ratio.4 · Colloidal crystal engineering with MOF PAEs · Fig. 3e-f
37 nm UiO-66 / 40 nm Au CsCl superlatticeresearch_0704__mat__mat_uio66_au_hybridPowder · Composite Sample · CompositeComplementary DNA-functionalised 37 nm UiO-66 PAEs and 40 nm Au PAEs assembled in a 1:1 ratio.4 · Colloidal crystal engineering with MOF PAEs · Fig. 3d
UiO-66 bcc MOF-MOF superlatticeresearch_0704__mat__mat_uio66Powder · Target Sample · CompositeTwo batches of DNA-functionalised 37 nm UiO-66 NPs with complementary sticky ends assembled and annealed.3 · Colloidal crystal engineering with MOF PAEs · Fig. 3b-c
UiO-66 fcc MOF superlatticeresearch_0704__mat__mat_uio66Powder · Target Sample · CompositeDNA-functionalised 37 nm UiO-66 NPs assembled with self-complementary DNA sticky ends and annealed.3 · Colloidal crystal engineering with MOF PAEs · Fig. 3a-c
octahedral UiO-66 PAE bcc superlatticeresearch_0704__mat__mat_uio66Powder · Target Sample · CompositeOctahedral UiO-66 PAEs with self-complementary GCGC sticky ends assembled with DNA linkers.5 · Building block shape as a structure-influencing factor · Fig. 4c
octahedral UiO-66 nanoparticlesresearch_0704__mat__mat_uio66Powder · Pristine Control · Pristine FrameworkOctahedral UiO-66 NPs made by acetic acid modulated solvothermal synthesis.4 · Synthesis of octahedral UiO-66 NPs · Supplementary Fig. 7
DNA-PEG5k-functionalised UiO-66 PAEsresearch_0704__mat__mat_uio66Powder · Target Sample · Guest LoadedUiO-66 nanoparticles passivated with phosphate-PEG5k-N3 and functionalised with DBCO-TEG DNA.3 · Synthesis of uniform and colloidally stable MOF PAEs · Fig. 2e
spherical UiO-66 nanoparticlesresearch_0704__mat__mat_uio66Powder · Pristine Control · Pristine FrameworkAs-synthesised and sucrose-gradient-purified spherical UiO-66 nanoparticles stored in anhydrous DMF or water depending on processing step.3 · Synthesis of spherical UiO-66 NPs · Supplementary Fig. 6